2022 MERCEDES-BENZ E-CLASS CABRIOLET engine coolant

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions #
Wait until the engine has cooled down. #
Make sure that the air supply tothera diator is not obstructed. #
Avoiding high loads on the engine, drive tothe nearest quali/ed specialist workshop. In doing so, ensu rethat the
coolant temp erature display remains below 120°C.
ÿ *T
here is a malfunction in the engine cooling system. #
Avoiding high loads on the engine, drive tothe nearest quali/ed specialist workshop. In doing so, ensu rethat the
coolant temp erature display remains below 120°C.
8
Reserve fuel level *T
he fuel supply has dropped into there ser verange. #
Refuel.
! Clean the fuel filter *V
Vehicles wit
ehicles wit h diesel engines:
h diesel engines: the fuel /lter is dirty or thewa ter in the fuel /lter needs tobe drained. #
Consult a quali/ed specialist workshop. Displ
aymessages and warning/indicator lamps
391
391

W
W
ar
ar ning and indicat
ning and indicat or lam
or lamps
ps Ov
Ov
er
ervie
vie w of indicat
w of indicat or and w
or and war
arning lam
ning lam ps
ps Some systems will per
form a self-test when the
ve hicle is switched on. Some indicator and warn-
ing lamps may brie0y light up or 0ash. This beha v-
iour is non-critical. These indicator and warning
lamps indicate a malfunction only if they light up
or 0as haTer theve hicle has been star ted or dur-
ing a journe y.
Ins
Ins tr
trument displ ay
ument display Depending on
the display setting, the positions of
th e indicator lamps on the inst rument display may
di.er from theex ample shown. Indicat
Indicat or and w
or and w ar
arning lam
ning lam ps:
ps:
6 Restraint system (/ page 432)
ü Seat belt (/ page 432)
ï Trailer hitch (/ page 433)
Ù Powe r steering (/ page 433)
ÿ Coolanttemp erature (/ page 434)
; Engine diagnostics (/ page 434)
% V
V ehicles wit
ehicles wit h a diesel engine:
h a diesel engine: preglow
# Electricalfault (/ page 434)
8 Reser vefuel wi thfuel /ller 0ap loca-
tion indicator (/ page 434)
! Electric parking brake (yellow)
(/page 438)
! Electric parking brake (red)
(/page 438)
J Brakes (yellow) (/ page 438)
J Brakes (red) (/ page 438)
L Distancewarning (/ page 440)
Ó Active Brake Assist (/ page 440)
ê Active Brake Assist (/ page 440)ä
AIR BODYCONTROL (/ page 440)
ä DYNAMIC BODY CONTROL
(/ page 440)
! ABS (/page 441)
÷ ESP®
(/ page 441)
å ESP®
OFF (/ page 441)
h Tyre pressure monitoring system
(/ page 444)
T Standing lights (/ page 127)
L Low beam (/ page 127)
K High beam (/ page 129)
#! Turn signal lights (/ page 129)
R Rear fog light (/ page 127)
Symbols on t
Symbols on t he centr he central display:
al displ ay:
É DriveAway Assist (/ page 238)
L CrossTra1c Ale rt (/ page 238)
º Manoeuv ring brake function (/ page 239) Display messa
ges and warning/indicator lamps
431
431

W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
ï
Tr ailer tow hitch warning
lamp *T
hered trailer hitch warning lamp is lit.
The trailer hitch is not operational. &
W
W ARNING
ARNING Risk of an accident if the ball neck is not loc ked
The trailer may become de tach ed. #
Stop theve hicle immediately in accordance with the tra1c conditions. Do not continue driving. #
Uncouple the trailer and secure it against rolling away. #
Initiate a new swivelling procedu reand do not re-couple the trailer until the display message disappears. #
Notethe messages on the instrument displa y.Engine
Engine
W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
ÿ
Coolant warning lamp (red) *T
he red coolant warning lamp is lit while the engine is running.
Po ssible causes:
R The temp erature sensor is malfunctioning
R The coolant le vel is too low
R The air supply tothera diator is obstructed
R The radiator fan is faulty 434
434
Display message
s andwarning/indicator lamps

W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
R The engine coolant pump is faulty
If th ere is an additional warning tone, the coolant temp erature has exceeded 120°C. &
W
WARNING
ARNING Risk of burns when opening the bonnet
If yo u open the bonnet in theeve nt of an overheated engine or /re in the engine compartment, thefo llowing situa-
tions may occur:
R You may come into contact with hot gases.
R You may come into contact with other escaping hot operating 0uids. #
Before opening the bonnet, allow the engine tocool down. #
Intheev ent of a /re in the engine compartment, keep the bonnet closed and call the /re service. #
Stop immediately in accordance with the tra1c conditions and switch o. theve hicle. Do not continue driving. #
Notethe messages on the instrument displa y.
If t If t he coolant t
he coolant t em
em per
per atur
atur e displa
e displa y is at t
y is at the low
he lower end of t
er end of t he t
he tem
emper
per atur
atur e scale:
e scale: #
Consult a quali/ed specialist workshop.
If t
If t he coolant t he coolant t em
emper
per atur
atur e displa
e displa y is at t
y is at the upper end of t
he upper end of t he t
he tem
emper
per atur
atur e scale:
e scale: #
Exit theve hicle and keep a safe distance from it until the engine has cooled down. #
Check the coolant le vel (/ page 305). Display message
s andwarning/indicator lamps
435
435

W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions #
Make sure that the air supply tothera diator is not obstructed. #
Avoiding high loads on the engine, drive tothe nearest quali/ed specialist workshop. In doing so, ensu rethat the
coolant temp erature display remains below 120°C.
ÿ
Coolant warning lamp (yel-
low) *T
he yellow coolant warning lamp is lit while the engine is running.
Po ssible causes:
R The temp erature sensor is malfunctioning
R The charge air, transmission oil or battery cooling is faulty
R The radiator shutters are bloc ked or defective #
Avoiding high loads on the engine, drive tothe nearest quali/ed specialist workshop.
; Engine diagnosis warning
lamp *T
he yellow engine diagnostics warning lamp is lit while the engine is running.
A malfunction has occur red in the engine, theex haust system or the fuel system.
The emissions limit value may ha vebeen exceeded and the engine may be running in eme rgency operation mode. #
Have theve hicle checked as soon as possible at a quali/ed specialist workshop.
V
V ehicles wit
ehicles wit h a diesel engine:
h a diesel engine: the fuel tank may ha vebeen run dr y. #
Start the engine thre eto four times aTer refuelling.
If th eye llow engine diagnosis warning lamp goes out, emer gency ope ration mode is cancelled. The vehicle need not
be checked. 436
436
Display messages and
warning/indicator lamps

é
ATTENTION ASSIS T:Take a
break!.................................................... 400
: Automatic driving lights inoper-
ative...................................................... 380
Û Battery overheated Stop, every-
body out! Outdoors if possible ................ 419
Á Change key batteries .................... 376
J Check brake 0uid le vel.................. 399
5 Check eng. oil le v.when next
re fuelling ............................................... 428
ï Check trailer hitch lo ck(white
display message) .................................... 385
h Check tyre(s) ................................ 422
! Clean the fuel /lter....................... 391
J Close boot separator .................... 379
ÿ Coolant Stop vehicle Switch
engine o............................................... 390
! currently una vailable See Own-
er's Manual............................................4 12÷
currently una vailable See Own-
er's Manual............................................4 13
5 Engine oil le vel cannot be meas-
ured....................................................... 430
5 Engine oil le velRe duce oil le vel..... 429
5 Engine oil le velSt op vehicle
Switch engine o.................................... 429
5 Engine oil pressure Stop Switch
o. engine.............................................. 430
ä Fault Drive at max. 80 km/h ......... 410
6 Front leT malfunction Consult
wo rkshop (e xample)...............................3 73
_ Front leT seat backrest not
loc ked (e xamp le).................................... 388
& inoperative Battery low................. 384
& inoperative Refuel vehicle............. .384
& inoperative See Owner's Man........ 383
! inoperative See Owner's Manual.. .413
÷ inoperative See Owner's Manual.. .414
T inoperative See Owner's Manual.. .415 G
Inoperative................................... 416
: Intelligent Light System inopera-
tive........................................................ 381
Á Key being initialised Please wait.... 377
Á Key not de tected (red display
message).............................................. .377
Á Key not de tected (white display
message).............................................. .376
: LeT dipped beam (e xample).......... 380
6 LeT windowbag malfunction
Consult workshop (e xample).................. 373
¢ Lowe ring....................................... 411
: Malfunction See Owner's Man-
ual ......................................................... 380
ð Maximum speed exceeded ............ 403
Ø ................................................... .426
ç O.................................................4 02
ë O.................................................3 99
K Open/close soT top comple tely.... 379 Index
453 453

!
Parking brake See Owner's
Manual..................................................3 95
É Please reduce speed .................... .411
Ý Please wait 48 V battery charg-
ing......................................................... 420
h Rectify tyre pressure ..................... 422
Ø Re/ll AdBlue See Owner ’sMan-
ual ......................................................... 425
! Release parking brake ...................398
¸ Replace air cleaner ....................... 392
Á Replace key.................................. 376
8 Reser vefuel le vel.......................... 391
6 Restraint sys. malfunction Con-
sult workshop ....................................... .373
# See Owner's Manual..................... 417
K SoTtop lo wering........................... 379
K SoTtop Operation only up to
60 km/h................................................ 378
Ù Steering malfunction Increased
ph ysical e.ort See Owner's Manual....... 386 Ù
Steering malfunction Stop
immediately See Owner's Manual ........... 387
# Stop vehicle Lea veengine run-
ning ....................................................... 419
# Stop vehicle See Owner's Man-
ual......................................................... 418
É Stop vehicle Vehicle too low .......... 410
ç suspended .................................... 401
: Switch o. lights............................ 381
: Switch on headlamps .................... 381
á temp orarily una vailable Camera
view restric ted....................................... 409
¸ temp orarily una vailable Sensors
dirty....................................................... 408
Ø Top up AdBlue Emer gency op. in
XXX miles See Owner's Manual.............. 426
+ Top up coolant See Owner ’s
Manual.................................................. 390
¥ Top up washer 0uid...................... .389 !
Turn on the ignition torelease
th e parking brake ................................... 398
d Vehicle is operational Switch o.
ignition before exiting............................. 384
É Vehicle rising Please wait.............. 411
É Vehicle rising ................................ 411
h Warning tyre defect....................... 423
h Wheel sensor(s) missing ................ 421
K While stationar y,apply the
brake before operating the soT top........ 378
Ø XX,X l Top up AdBlue Swit chon
ignition, wait 60 sec. or eng. start not
poss...................................................... 426
Ac tive Blind Spot Assist cur rently
una vailable See Owner's Manual ............ 406
Ac tive Blind Spot Assist inoperative........ 407
Ac tive Blind Spot Assist not available
when towing a trailer See Owner's
Manual.................................................. 407 454 454
Index

Destination entry...................................2
70
Displaying/hiding the menu................... 268
Live Tra1c Information........................... 273
Map....................................................... 272
No tes..................................................... 268
N
Neutr eutr al al
En gaging................................................ 170 O
O
Occupant safe
Occupant safe ty
ty............................................. 42
On-boar
On-boar d com
d comput
puter
er, Computer, Operating system
Displaying the service due dat e.............. 300
Instrument displa y................................. 253
Menu overview.......................................2 51
Operating.............................................. 251
On-boar
On-boar d diagnos
d diagnostics int tics interf
erface
ace , Diagnos-
tics connection.............................................. 33
On-boar
On-boar d electr
d electronics
onics
Engine electronics................................. 355
Tw o-w ayradios...................................... 355
on-demand f
on-demand f eature
eature........................................ .22
Online ser
Online ser vices
vices............................................. .39
Open Sour
Open Sour ce
ceSoTw
SoTw are
are,Free soTware............. 39 Open/close g
Open/close g
ar
arag
ag e door
e door.............................. 182
Open/close g
Open/close g ate
ate..........................................1 82
Opening t
Opening t he boo
he boot lid using y
t lid using y our f
our foot
oot
HANDS-FREE ACCESS............................. 85
Oper
Oper ating
ating 0uids
0uids
Ad Blue ®
................................................ .364
Ad ditives................................................ 362
Brake 0uid............................................. 367
Coolant.................................................. 367
Diesel.................................................... 363
Engine oil............................................... 365
Pe trol..................................................... 361
Wi ndsc reen washer 0uid........................ 368
Oper Oper ating safe
ating safe ty
ty
48 V on-board elect rical system............... 23
Information............................................. .23
Oper
Oper at
ator's manual
or's manual ........................................ .22
Op
Op timised acceler
timised acceler ation
ation................................ 159
Outside mirr
Outside mirr ors
ors
Au tomatic anti-dazzle mode.................. .141
Au tomatic mir rorfo lding function........... 143
Blind Spot Assist.................................... 214
Fo lding in/out........................................1 40Memory function................................... 116
Pa
rking position..................................... 142
Setting................................................... 140
Wa rning lamp......................................... 214
Ov
Ov er erhead contr
head contr ol panel
ol panel.................................. 12
Ov
Ov er
ervie
vie w of airbags
w of airbags........................................ 47 P
P
P
P aint code
aint code................................................... 358
P
P anel heating
anel heating............................................... 111
P
P ar
ar k position
k position
DIRECT SELECT le ver............................. 169
Engaging................................................ 170
P
P ar
ar king
king, PARKTRONIC
Electric parking brak e............................ 229
P
P ar
ar king aid
king aid, Active Parking
Assist, PARKTRONIC.................................... 229
P
P ar
ar king Assist
king Assist, Active Parking Assist.............2 33
P
P ar
ar king Assis
king Assist P t PARK
ARK TR
TRONIC
ONIC
Ac tivating............................................... 232
Ad justing warning tones......................... 233
Deactivating........................................... 232
Fu nction................................................ 229 Ind
ex
465 465